GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2000 🢒 Yukon Denali 🢒 Body and Accessories 🢒 Wiring Systems 🢒 Engine Controls Connector End Views
Table 1: Air Injection Reaction (A.I.R.) Pump and Check Valve
Table 2: Air Injection Reaction (A.I.R.) Check Valve
Table 3: Camshaft Position (CMP) Sensor Connector
Table 4: Central Sequential Fuel Injection (Central SFI)
Table 5: Crankshaft Position (CKP) Sensor Connector
Table 6: Engine Coolant Temperature (ECT) Sensor Connector
Table 7: Exhaust Gas Recirculation (EGR) Valve Connector
Table 8: Evaporative Emission Canister Purge Valve Connector
Table 9: Evaporative Emission Canister Vent Valve Connector
Table 10: Fuel Pump and Sender Connector (Single Tank)
Table 11: Fuel Balance Pump Module--C1 (Dual Tank)
Table 12: Fuel Balance Pump Module--C2 (Dual Tank)
Table 13: Fuel Balance Pump Relay (Dual Tank)
Table 14: Fuel Balance Pump (Dual Tank)
Table 15: Fuel Pump and Sender Connector--Primary Tank (Dual Tanks)
Table 16: Fuel Level Sender-- Auxiliary Tank (Dual Tank)
Table 17: Fuel Pump and Sender (Export-Single Tank)
Table 18: Fuel Pump and Sender (Export-Dual Tanks)
Table 19: Fuel Balance Pump Module Connector (Export-Dual Tanks)
Table 20: Fuel Tank Pressure Sensor
Table 21: Heated Oxygen Sensor (HO2S), Bank 1, Sensor 1 (LF)
Table 22: Heated Oxygen Sensor (HO2S), Bank 2, Sensor 1 (RF)
Table 23: Heated Oxygen Sensor (HO2S), Bank 1, Sensor 2 (LR) (Over 8600 lb GVW)
Table 24: Heated Oxygen Sensor (HO2S), Bank 2, Sensor 2 (RR) (Over 8600 lb GVW)
Table 25: Heated Oxygen Sensor (HO2S), Bank 1, Sensor 2 (LR) (Under 8600 lb GVW)
Table 26: Heated Oxygen Sensor (HO2S), Bank 2, Sensor 2 (RR) (Under 8600 lb GVW)
Table 27: Idle Air Control (IAC) Valve Connector
Table 28: Ignition Coil Connector
Table 29: Ignition Control Module (ICM) Connector
Table 30: Intake Air Temperature (IAT) Sensor Connector
Table 31: Knock Sensor
Table 32: Manifold Absolute Pressure (MAP) Sensor Connector
Table 33: Mass Air Flow (MAF) Sensor Connector
Table 34: Throttle Position Sensor Connector
Table 35: Vehicle Speed Sensor (A/T RWD, Active Transfer Case 4WD)
Table 36: Vehicle Speed Sensor (M/T RWD, Transfer Case 4WD except Active T-Case)

Air Injection Reaction (A.I.R.) Pump and Check Valve


Object Number: 73229 Size: CH

Connector Part Information
    • 12129565
    • 4F M/P 280 (MD GRY)

Pin

Wire Color

Circuit No.

Function

A

RED

78

Air Injection Reaction Pump Motor Feed

B

BLK

350

Motor Ground

C

RED

78

Check Valve Feed

D

BLK

350

Check Valve Ground

Air Injection Reaction (A.I.R.) Check Valve


Object Number: 333039 Size: CH

Connector Part Information
    • 12052641
    • 2F M/P 150 (BLK)

Pin

Wire Color

Circuit No.

Function

A

RED

78

Check Valve Feed

B

BLK

350

Check Valve Ground

Camshaft Position (CMP) Sensor Connector


Object Number: 68730 Size: CH

Connector Part Information
    • 12110293
    • 3F M/P 150 SLD (BLK)

Pin

Wire Color

Circuit No.

Function

A

PNK/BLK

632

CMP Sensor Return

B

BRN/WHT

633

CMP Sensor Signal

C

PNK

539

Fuse Output - Ignition 1 - Type III Fuse

Central Sequential Fuel Injection (Central SFI)


Object Number: 332019 Size: CH

Connector Part Information
    • 
        12177086
    • 16F Mic/P 100 (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK

1744

Fuel Injector #1 Control

B

PNK

439

Ignition Voltage

C

PNK

439

Ignition Voltage

D

PNK/BLK

1746

Fuel Injector #3 Control

E

LT BLU/BLK

844

Fuel Injector #4 Control

F

PNK

439

Ignition Voltage

G

PNK

439

Ignition Voltage

H

LT GRN/BLK

1745

Fuel Injector #2 Control

J

DK BLU/WHT

878

Fuel Injector #8 Control

K

PNK

439

Ignition Voltage

L

PNK

439

Ignition Voltage

M

YEL/BLK

846

Fuel Injector #6 Control

N

BLK/WHT

845

Fuel Injector #5 Control

P

PNK

439

Ignition Voltage

R

PNK

439

Ignition Voltage

S

LT GRN/BLK

1745

Fuel Injector #7 Control

Crankshaft Position (CKP) Sensor Connector


Object Number: 62453 Size: CH

Connector Part Information
    • 12059595
    • 3F M/P 150 (BLK)

Pin

Wire Color

Circuit No.

Function

A

PNK

439

Fuse Output - Ignition 1 - Type III Fuse

B

PPL

574

CKP Sensor Return

C

YEL

573

CKP Sensor Signal

Engine Coolant Temperature (ECT) Sensor Connector


Object Number: 232831 Size: CH

Connector Part Information
    • 12162194
    • 2F M/P 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK

452

Sensor Return

B

YEL

410

Coolant Temperature Sensor Signal

Exhaust Gas Recirculation (EGR) Valve Connector


Object Number: 68773 Size: CH

Connector Part Information
    • 12186057
    • 5F M/P 150 (BLK)

Pin

Wire Color

Circuit No.

Function

A

WHT

257

EGR Solenoid Output

B

BLK

470

Sensor Return

C

BRN

1456

EGR Solenoid Position Signal

D

GRY

474

5 Volt Reference

E

RED

1676

EGR Solenoid Output Feed

Evaporative Emission Canister Purge Valve Connector


Object Number: 35437 Size: CH

Connector Part Information
    • 12052643
    • 2F M/P 150 Series (RED)

Pin

Wire Color

Circuit No.

Function

A

PNK

539

Sensor Return

B

DK GRN/WHT

428

Canister Purge Solenoid Control

Evaporative Emission Canister Vent Valve Connector


Object Number: 35437 Size: CH

Connector Part Information
    • 12124037
    • 2F M/P 150 (BLK)

Pin

Wire Color

Circuit No.

Function

A

WHT

1310

Canister Vent Valve Solenoid Control

B

PNK

539

Fuse Output - Ignition 1 - Type III Fuse

Fuel Pump and Sender Connector (Single Tank)


Object Number: 258300 Size: CH

Connector Part Information
    • 12160482
    • 4F M/P 150 SLD (BLK)

Pin

Wire Color

Circuit No.

Function

A

WHT

1589

Fuel Level Signal To VCM

B

GRY

120

Fuel Pump Motor Feed

C

BLK

150

Ground

D

BLK

470

Sensor Return

Fuel Balance Pump Module--C1 (Dual Tank)


Object Number: 287962 Size: CH

Connector Part Information
    • 12162826
    • 5F M/P 150 (BLK)

Pin

Wire Color

Circuit No.

Function

A

PNK

639

Fuse Output Ignition - 1 Type III Fuse

B

LT BLU

975

Fuel Level Signal--Auxiliary Tank

C

DK BLU/WHT

970

Fuel Level Signal--Primary Tank

D

LT GRN

497

Fuel Balance Pump Relay Control

E

BLK/WHT

451

Engine Control Module Ground

Fuel Balance Pump Module--C2 (Dual Tank)


Object Number: 232831 Size: CH

Connector Part Information
    • 12162193
    • 2F M/P 150.2 (BLK)

Pin

Wire Color

Circuit No.

Function

A

GRY

474

Voltage Reference

B

WHT

1589

Fuel Level Signal To VCM

Fuel Balance Pump Relay (Dual Tank)


Object Number: 39670 Size: CH

Connector Part Information
    • 12129716
    • 4F M/P 280 (GRY)

Pin

Wire Color

Circuit No.

Function

30

PNK

639

Fuse Output Ignition - 1 Type III Fuse

85

GRY

120

Fuel Pump Motor Feed

86

LT GRN

497

Fuel Balance Pump Relay Control Signal

87

LT GRN

1058

Fuel Balance Pump Control

Fuel Balance Pump (Dual Tank)


Object Number: 258174 Size: CH

Connector Part Information
    • 12010973
    • 2M M/P W/P SHD SLD (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK

150

Ground

B

LT GRN

1058

Fuel Balance Pump Feed

Fuel Pump and Sender Connector--Primary Tank (Dual Tanks)


Object Number: 258300 Size: CH

Connector Part Information
    • 12160482
    • 4F M/P 150 SLD (BLK)

Pin

Wire Color

Circuit No.

Function

A

DK BLU/WHT

970

Fuel Level Signal To Balance Module

B

GRY

120

Fuel Pump Motor Feed

C

BLK

150

Ground

D

BLK

900

Sensor Return

Fuel Level Sender-- Auxiliary Tank (Dual Tank)


Object Number: 38608 Size: CH

Connector Part Information
    • 12162188
    • 4F M/P 150.2 P2S (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK

900

Ground

B - C

--

--

Not Used

D

LT BLU

975

Auxiliary Fuel Tank Level Sender Feed

Fuel Pump and Sender (Export-Single Tank)


Object Number: 593204 Size: CH

Connector Part Information
    • 12059416
    • 3M W/P (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK/WHT

451

Engine Control Module Ground

B

PPL

30

Fuel Level Feed to Fuel Gauge

C

GRY

120

Fuel Pump Motor Power Feed

Fuel Pump and Sender (Export-Dual Tanks)


Object Number: 593204 Size: CH

Connector Part Information
    • 12020425
    • 3M W/P (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK/WHT

451

Ground

B

DK BLU/WHT

970

Fuel Level Feed to Balance Module

C

GRY

120

Fuel Pump Motor Power Feed

Fuel Balance Pump Module Connector (Export-Dual Tanks)


Object Number: 73212 Size: CH

Connector Part Information
    • 12059573
    • 6F M/P 280 (BLK)

Pin

Wire Color

Circuit No.

Function

A

PNK

639

Fuse Output Ignition - 1 Type III Fuse

B

LT BLU

975

Auxiliary Fuel Tank level Feed

C

DK BLU/WHT

970

Primary Fuel Tank Level Feed

D

LT GRN

497

Fuel Balance Pump Relay Control

E

BLK/WHT

451

Engine Control Module Ground

F

PPL

30

Fuel Level Signal to Gauge

Fuel Tank Pressure Sensor


Object Number: 62453 Size: CH

Connector Part Information
    • 12059595
    • 3F M/P 150 (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK

470

Sensor Return

B

DK GRN

890

Fuel Tank Pressure Sensor Signal

C

GRY

474

Reference Voltage Feed - 5 Volt Reference

Heated Oxygen Sensor (HO2S), Bank 1, Sensor 1 (LF)


Object Number: 396241 Size: CH

Connector Part Information
    • 12162102
    • 4M M/P 150 (BLK)

Pin

Wire Color

Circuit No.

Function

A

TAN/WHT

1653

HO2S Return (Pre-converter)

B

PPL/WHT

1665

HO2S Signal (Pre-converter)

C

BLK

150

Ground

D

PNK

539

Fuse Output - Ignition 1 - Type III Fuse

Heated Oxygen Sensor (HO2S), Bank 2, Sensor 1 (RF)


Object Number: 396241 Size: CH

Connector Part Information
    • 12162102
    • 4M M/P 150 (BLK)

Pin

Wire Color

Circuit No.

Function

A

TAN

1667

HO2S Return (Pre-converter)

B

PPL

1666

HO2S Signal (Pre-converter)

C

BLK

150

Ground

D

PNK

539

Fuse Output - Ignition 1 - Type III Fuse

Heated Oxygen Sensor (HO2S), Bank 1, Sensor 2 (LR) (Over 8600 lb GVW)


Object Number: 280761 Size: CH

Connector Part Information
    • 12160482
    • 4M M/P 150 (BLK)

Pin

Wire Color

Circuit No.

Function

A

TAN

1671

HO2S Return RR of the Catalytic Converter

B

PPL

1670

HO2S Signal RR of the Catalytic Converter

C

BLK

150

Ground

D

PNK

539

Fuse Output - Ignition 1 - Type III Fuse

Heated Oxygen Sensor (HO2S), Bank 2, Sensor 2 (RR) (Over 8600 lb GVW)


Object Number: 280761 Size: CH

Connector Part Information
    • 12160482
    • 4M M/P 150 (BLK)

Pin

Wire Color

Circuit No.

Function

A

TAN/WHT

1669

HO2S Return LF of Catalytic Converter

B

PPL/WHT

1668

HO2S Signal LF of Catalytic Converter

C

BLK

150

Ground

D

PNK

539

Fuse Output - Ignition 1 - Type III Fuse

Heated Oxygen Sensor (HO2S), Bank 1, Sensor 2 (LR) (Under 8600 lb GVW)


Object Number: 280761 Size: CH

Connector Part Information
    • 12160482
    • 4M M/P 150 (BLK)

Pin

Wire Color

Circuit No.

Function

A

TAN/WHT

1669

HO2S Return LF of Catalytic Converter

B

PPL/WHT

1668

HO2S Signal LF of Catalytic Converter

C

BLK

150

Ground

D

PNK

539

Fuse Output - Ignition 1 - Type III Fuse

Heated Oxygen Sensor (HO2S), Bank 2, Sensor 2 (RR) (Under 8600 lb GVW)


Object Number: 280761 Size: CH

Connector Part Information
    • 12160482
    • 4M M/P 150 (BLK)

Pin

Wire Color

Circuit No.

Function

A

TAN

1671

HO2S Return RR of the Catalytic Converter

B

PPL

1670

HO2S Signal RR of the Catalytic Converter

C

BLK

150

Ground

D

PNK

539

Fuse Output - Ignition 1 - Type III Fuse

Idle Air Control (IAC) Valve Connector


Object Number: 38608 Size: CH

Connector Part Information
    • 12162189
    • 4F M/P 150 (BLK)

Pin

Wire Color

Circuit No.

Function

A

LT GRN/BLK

444

IAC Valve Motor Feed (Coil B Low)

B

LT GRN/WHT

1749

IAC Valve Motor Feed (Coil B High)

C

LT BLU/BLK

1748

IAC Valve Motor Feed (Coil A Low)

D

LT BLU/WHT

1747

IAC Valve Motor Feed (Coil A High)

Ignition Coil Connector


Object Number: 68743 Size: CH

Connector Part Information
    • 12146121
    • 3F M/P 150 (BRN)

Pin

Wire Color

Circuit No.

Function

A

PNK

439

Fuse Output - Ignition 1 - Type III Fuse

B

WHT

121

Tachometer Signal

C

WHT/BLK

1847

Coil Firing Control Signal

Ignition Control Module (ICM) Connector


Object Number: 38608 Size: CH

Connector Part Information
    • 12162189
    • 4F M/P 150 (BLACK)

Pin

Wire Color

Circuit No.

Function

A

PNK

439

Fuse Output - Ignition 1 - Type III Fuse

B

WHT

423

Electronic Spark Timing Control Signal

C

BLK

150

Ground

D

WHT/BLK

1847

Ignition Coil Control Output

Intake Air Temperature (IAT) Sensor Connector


Object Number: 68719 Size: CH

Connector Part Information
    • 12162198
    • 2F M/P 150 (GRAY)

Pin

Wire Color

Circuit No.

Function

A

TAN

472

IAT Sensor Signal

B

BLK

470

IAT Sensor Return

Knock Sensor


Object Number: 35416 Size: CH

Connector Part Information
    • 12103023
    • 1M W/P TWR (GRY)

Pin

Wire Color

Circuit No.

Function

A

DK BLU

496

Knock Sensor Signal

Manifold Absolute Pressure (MAP) Sensor Connector


Object Number: 68740 Size: CH

Connector Part Information
    • 12129946
    • 3F M/P 150 (GRAY)

Pin

Wire Color

Circuit No.

Function

A

BLK

470

MAP Sensor Return

B

LT GRN

432

MAP Sensor Signal

C

GRY

474

5 Volt Reference

Mass Air Flow (MAF) Sensor Connector


Object Number: 62453 Size: CH

Connector Part Information
    • 12059595
    • 3F M/P 150 (BLACK)

Pin

Wire Color

Circuit No.

Function

A

YEL

492

MAF Sensor Signal

B

BLK/WHT

451

VCM Ground

C

PNK

539

Fuse Output - Ignition 1 - Type III Fuse

Throttle Position Sensor Connector


Object Number: 62485 Size: CH

Connector Part Information
    • 12078090
    • 3F M/P 150 (BLK)

Pin

Wire Color

Circuit No.

Function

A

GRY

416

5 Volt Reference

B

BLK

452

Sensor Return

C

DK BLU

417

TP Sensor Signal

Vehicle Speed Sensor (A/T RWD, Active Transfer Case 4WD)


Object Number: 237066 Size: CH

Connector Part Information
    • 12162194
    • 2F M/P 150.2 P2S (BLK)

Pin

Wire Color

Circuit No.

Function

A

PPL/WHT

821

VSS Hign Signal

B

LT GRN/BLK

822

VSS Low Signal

Vehicle Speed Sensor (M/T RWD, Transfer Case 4WD except Active T-Case)


Object Number: 38554 Size: CH

Connector Part Information
    • 12124819
    • 2F M/P 280 (BLK)

Pin

Wire Color

Circuit No.

Function

A

PPL/WHT

821

VSS Hign Signal

B

LT GRN/BLK

822

VSS Low Signal